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Creating a stored procedure that counts book written by author.
Posted by: Josef Lundström
Date: September 01, 2017 10:21AM

Hello!

I am trying to create a stored procedure in MYSQL, which I intend to count books in a table that is written by a certain author:


DELIMITER //
CREATE PROCEDURE CountBooks()
BEGIN
DECLARE bookCounter INTEGER;

SELECT COUNT(*)
INTO bookCounter
FROM book
WHERE bookAuthor LIKE 'Vlad Tepec';
END //

CALL CountBooks,(bookCounter);
SELECT @bookCounter;

DROP PROCEDURE IF EXISTS CountBooks;


@bookCounter is null... How can I modify the stored procedure to get the expected result?
Thanks!

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Creating a stored procedure that counts book written by author.
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